Behavior {social behavior, ecology} can depend on biochemical factors, structural factors, and population parameters. Behavioral changes require at least ten generations and typically more than twice that many. Behavioral-change rate depends on how directly behavior relates to survival and how easy learning is. Societal species tend to evolve more behaviors, easier learning, and more learning abilities. Social species have traditions, tools, and play.
Societies have available-behavior ranges {behavior scale}|, because species competition forces species to occupy more than preferred ecological niches. Behavior scales are adaptations. Behaviors typically have more than one use. Behavior scales depend on population density and other group parameters. Society evolution tends to make behaviors converge.
Species have minimum allowed distance {social distance}| between two individuals. In humans, social distance is one meter.
Individual behavior changes can cause random group-behavior changes over time {social drift}.
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Date Modified: 2022.0225